| Title |
Causes of water pollution in BOD and algal bloom in Winter season at Mulgum of the Nakdong River |
| Authors |
송미경(Mi Kyung Song),박청길(Chung Kil Park),이석모(Suk Mo Lee),백경훈(Kyung Hoon Baek),신성교(Sung Kyo Shin),송교욱(Kyo Ook Song) |
| Abstract |
The study was performed to find the cause of high concentration of BOD and algal bloom during winter season at Mulgum in the downstream of Nakdong River since 1995. There was high correlationship between BOD concentration and Chl. a contents which shows that algal bloom makes Autochthonous BOD. The dominant algae during of winter blooming season was Stephanodiscus sp.. This algae maintained the blooming under the condition of low water temperature, long retention time with decrease of flow rate, and abundant nutrient concentration. To reduce the amount of Stephanodiscus sp. biomass, it is important to decrease the loading of TP and TN from the upstream, because of the possible approach to control. |